[对凸阵列超声波探针的矢量流技术的应用研究]
Penghui Hao1, Yigang Du1, Shuangshuang Li1
1Shenzhen Mindray Bio-Medical Electronics Co., Ltd., Shenzhen, 518057.
概括
使用横振 (TO) 方法的载波流成像 (VFI) 准确地测量血流. 这项研究通过腹部凸起探头验证TO-VFI,在模拟和幻影实验中显示出5%的误差.
科学领域:
- 超声波技术的超声波技术
- 医学成像医学成像
- 血液动力学 血液动力学
背景情况:
- 矢量流成像 (VFI) 提供视角独立的实时流幅和方向采集.
- 传统的多普勒方法在角度校正和直流向量测量方面存在局限性.
- 横振动 (TO) 方法是VFI的一个关键技术.
研究的目的:
- 为了验证商业超声波机上的横振荡 (TO) 矢量流成像算法,使用腹部凸起的探头.
- 通过将测量速度与模拟和幻影实验中的已知值进行比较来评估TO-VFI的准确性.
主要方法:
- 介绍成像过程和TO矢量流技术的原理.
- 模拟实验用于计算设定值和测量值之间的速度误差.
- 多普勒流幻影实验用于验证速度测量与已知的流量.
主要成果:
- 模拟实验:TO-VFI测量速度为0.48 m/s (预设为0.50 m/s),误差为-4%.
- 多普勒流幻象实验:测量速度 (8.3316.67厘米/秒) 与实际值 (7.9717.34厘米/秒) 相比显示出 ±5%的误差.
结论:
- 模拟和幻影实验都证实了TO向量流技术对腹部凸起探头的可行性和准确性.
- 此验证解决了VFI中复杂探测类型的算法验证中的差距.
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